Electrochemical performance of SnO2:Sb-MWCNT nanocomposites for Li-ion batteries

被引:14
作者
Cevher, Ozgur [1 ]
Guler, Mehmet Oguz [1 ]
Tocoglu, Ubeyd [1 ]
Akbulut, Hatem [1 ]
机构
[1] Sakarya Univ, Fac Engn, Dept Met & Mat Engn, Sakarya, Turkey
关键词
Li-ion batteries; Sb-MWCNT nanocomposites; SnO2; deposition with sputtering; CARBON NANOTUBE COMPOSITE; TIN OXIDE; ANODE MATERIAL; ELECTRICAL-PROPERTIES; SENSING PROPERTIES; SB; SURFACE; FILMS; NANOPARTICLES;
D O I
10.1002/er.3132
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
In this study, SnO2:Sb coating on Cr-coated stainless steel and multiwall carbon nanotube (MWCNT) buckypaper substrates were prepared as anode materials using a radio frequency (RF) magnetron sputtering process for lithium-ion batteries. The nanocomposites were characterized with field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction and electrochemical test facilities. The evaluation of the electrochemical performance in lithium-ion batteries showed that the SnO2:Sb-MWCNT nanocomposites have shown reversible discharge capacities of 701 mAh g(-1), 732 mAh g(-1) and 753 mAh g(-1) for different RF powers (75 W, 100 W and 125 W), respectively, after 100 cycles. The high-capacity retention and cyclability ascribed to the good dispersion, high conductivity and fine particle size of SnO2:Sb on MWCNTs. Besides, the MWCNTs in SnO2:Sb act as a load carrying buffer component and behave like a flexible reinforcement, alleviating the electrode dilapidation resulted from volume change during the lithium insertion and de-insertion. Copyright (c) 2014 John Wiley & Sons, Ltd.
引用
收藏
页码:499 / 508
页数:10
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